Daily Chess Improvement: Endgame Challenge!

This is a difficult endgame. It requires extensive calculation. Can you find right plan?

White to move. How should white proceed?

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Comments (35)
No. 1-35
Bhagiradh
Bhagiradh

After that, you take opposition.

Bhagiradh
Bhagiradh

Ng1

biku
biku

Ng1 Kd2 2. Nf3+ Kd3 3. Ke1 KE3 4. Nd2 Kd3 5.Nf1

illyrialady
illyrialady

Nope. Same problem with numbering. Aargh!!!! Please fix this Webmaster. Thanks in advance.

illyrialady
illyrialady
  1. Ng1 Kd2!
  2. Nf3+ Kd3! (…. Ke3? 3. Ke1! )
  3. Ke1 Ke3
  4. Ne5 Ke4
  5. Nc4 Kd3
  6. Nd2 Ke3
  7. Nf3 Kd3
  8. Kf1 Ke3 brings the position I was talking about in my first post.

Then:

  1. Ne1 Kd2
  2. Nc2! Kd3

(10. ... Kd1 11. Nb4 Kd2 12. Nd5 Kd3 13.Nxf4+ Ke3 14. Nh5)

(10. .. Kxc2 11. Ke2)

  1. Ke1 Kxc2

(11. .. Ke4 12. Ke2)

  1. Ke2

This time, I'm trying copying-and-pasting out of a .txt file. Maybe the numbering problem will go away on this site if I copy
from a .txt file. Here's hoping.

Surpriselover
Surpriselover

We are going to be endgame masters!

Surpriselover
Surpriselover

If ...f6, gxf g7, Kf7!

Surpriselover
Surpriselover

Ng1 Kd2, Nf3+ Kd3, Ke1 Ke3, Nd2 Kd3, Nf1! What next?

illyrialady
illyrialady

Having a computer program "fix" my move numbers is a very bad bug.

illyrialady
illyrialady

By the way, I got the move numbers right when I copied and pasted them into my previous comment. The programmer for this website needs to fix this problem. It's a real pain until this gets fixed.

illyrialady
illyrialady
  1. Ng1 Kd2!
    1. Nf3+ Kd3! (…. Ke3? 3. Ke1! )
  2. Ke1 Ke3
  3. Ne5 Ke4
  4. Nc4 Kd3
  5. Nd2 Ke3
  6. Nf3 Kd3
  7. Kf1 Ke3 brings the position I was talking about in my first post.

Then:

  1. Ne1 Kd2
  2. Nc2! Kd3

(10. ... Kd1 11. Nb4 Kd2 12. Nd5 Kd3 13.Nxf4+ Ke3 14. Nh5)

(10. .. Kxc2 11. Ke2)

  1. Ke1 Kxc2

(11. .. Ke4 12. Ke2)

  1. Ke2
illyrialady
illyrialady

After

illyrialady
illyrialady
  1. …. Kd3 poses a much greater challenge than 2. ….. Ke3
illyrialady
illyrialady

2...... Kd3 poses a much greater challenge than 2..... Ke3

illyrialady
illyrialady

2.... Kd3! poses a much greater problem than 2.... Ke3?

illyrialady
illyrialady

2.... Kd3! poses a much greater problem than 2. Ke3?, Surpriselover.

Surpriselover
Surpriselover

Kd1 Nb4, Kd2 Nd5 wins the pawn!

Surpriselover
Surpriselover

Ng1 Kd2, Nf3+ Ke3, Ne1! Kd2, Nc2! ...scratch that first post...was typing my thoughts and hit enter... I am not finished with this line yet

Surpriselover
Surpriselover

Ng1 Kd2, Nh3 Ke3

illyrialady
illyrialady

After

  1. Ng1 Kd2
  2. Nf3+ Kd3
  3. Ke1 Ke3

in the resulting position, if it were Black’s turn to move, then after

….. Kd3
Kf1 Ke3
Ne1 Kd2
Nc2! wins.

The solution most likely entails forcing this position with Black to move.

Yancey_Ward
Yancey_Ward

Yes, that space after the numeral period is the cause. Thanks, Alena.

Yancey_Ward
Yancey_Ward

Test:

  1. e4 e5
  2. Nf3 Nc6
  3. Bb5

And now.....

  1. ..........Bd7
  2. Nc3

And......

4............Nf6
5.Bd2

Yancey_Ward
Yancey_Ward

Ah......

Alena
Alena

renumbering test:
(I started from 5)

  1. Ne6 e8
  2. Kg4 c3
  3. Kg5 c6

same lines without space:

5.Ne6 e8
6.Kg4 c3
7.Kg5 c6

Yancey_Ward
Yancey_Ward

Still can't figure out what happened to my post of last night- the indenting is gone and the move lines are not renumbering now. Very weird.

Yancey_Ward
Yancey_Ward

1.e4 e5
2.Nf3 Nc6
3.Bb5 Bd7

Yada, yada, yada......

4.Nc3 Nf6

Yancey_Ward
Yancey_Ward

test posting:

Yancey_Ward
Yancey_Ward

Ok, I can now scroll through the Improvement section again, but only if I have already opened one of them- you just have to scroll to the bottom of this particular comment section.

Alena
Alena

Well I can access older posts through "Top stories" but it is cumbersome

Yancey_Ward
Yancey_Ward

Also, I can now no longer access any material below the last few posts, so I can't see anything posted later than about yesterday.

Yancey_Ward
Yancey_Ward

I think what has happened is that in the reformatting it dropped a line for some reason- here is the line I was trying to cut and paste, but with the returns eliminated so that Susan's new site won't reinterpret them as new bullet points: 1.Ng1 Kd2, 2.Nf3 Kd3, 3.Ke1 Ke3, 4.Ne5 Ke4, 5.Nc4 Kd3 6.Nd2

Yancey_Ward
Yancey_Ward

Alena,The commenting field here really needs some work- it is reformatting and renumbering the lines of my comments into bullet point numbering, and I am not even writing the comment directly into the field, either, but cutting them from a text file.

Alena
Alena

Yancey, I worked through your solution and find a mistake. The mistake is 5. Nd2.

  1. Ng1 Kd2
  2. Nf3+ Kd3
  3. Ne5+ Ke4
  4. Nc4 Kd3
  5. Nd2 Kxd2
  6. Kg1 Ke1
  7. Kh1 f3
  8. gxf3 Kf2
  9. f4 g2+
  10. Kh2 g1=Q
  11. Kh3 Qg3#
    Black wins.
Yancey_Ward
Yancey_Ward

How about

  1. Ng1 Kd2
  2. Nf3 Kd3
  3. Ne5 Ke4
    4.Nc4

Which prevents an immediate f3 for black by threatening Ne2 forking the king and the pawn if it is on f3. Since black needs to keep the white king off the second rank, the black king must now play to d3 again....

  1. ......Kd3
  2. Nd2 Ke3 (again keeping the white king on 1st)

And, now, white can maneuver off the 1st rank with the subtle...

  1. Kf1! Ke3
  2. Ne1!

And with d3 no longer available....

  1. .......Kd2
  2. Nc2!!

The knight is immune- if black takes it, white wins both pawns and the resulting K+P vs K ending is quite easily managed. Black must again return to d3, but now.....

  1. .......Kd3
  2. Ke1

And white now has complete control of e3 and d2, and black can't play f3 which I will show below- I leave the lines 9. ....Kxc2 to the curious.

  1. .......f3
  2. gf3

And black is in a pickle- he either takes the knight which allows the white pawn to run free or he starts to retreat up the board through c4 and d5, but then white will simply play Kf1 and Kg2 to win at g3 and guard the pawn while preserving the knight.

Yancey_Ward
Yancey_Ward

I can tell pretty quickly that sacrificing the knight for either pawn is pointless- the resulting K+P vs K+P endings are both drawn, and really easily, too. This really leaves only one move for white since black also draws quickly with f3 if white plays either 1.Nc3 or 1.Ke1. After 1.Ng1 Kd2, I am not quite sure of the path to follow- have to think about it.



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